*{
	padding: 0px;
	margin: 0px;
}
nav{
	width: 1024px;
	height: 40px;
/* 	border: 1px solid blue; */
	margin: 0 auto;
}
li{
	float: left;
	width: 150px;
	list-style: none;
	text-align: center;
	line-height: 40px;
}
a{
	display: inline-block;
	text-decoration: none;
	width: 150px;
	height: 40px;
	color: black;
}
a:hover{
	background-color: darkblue;
}